S.C. Code Ann. § 56-19-710

If a security interest in a previously registered vehicle was perfected under any other applicable law of this State on January 1, 1958, the security interest shall continue perfected until its perfection lapses under the law under which it was perfected or would lapse in the absence of a further recording or until the earlier lapse of two years and nine months from January 1, 1958 and thereafter, if previously perfected under this article.